java putExtra String Intent Android
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putExtra String Intent Android
提问by M_K
public boolean onContextItemSelected(MenuItem item) {
AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
m = lv.getAdapter().getItem(info.position).toString();
Toast.makeText(getBaseContext(), "You clicked !"+m, Toast.LENGTH_SHORT).show();
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage("Are you sure you want to delete this Fixture?");
builder.setCancelable(false);
builder.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
//listAdapter.remove(m);
Intent i = new Intent(Afc.this.getApplicationContext(), WebViewExample.class);
i.putExtra("Key", m);
startActivity(i);
}
//new class activity WebView/////////////
//新类活动WebView////////////
Bundle extras = getIntent().getExtras();
String addOn = extras.getStringExtra("key",m);
Toast.makeText(getBaseContext(), "You clicked !"+addOn, Toast.LENGTH_SHORT).show();
Hi I am passing a string with an intent, its giving me a error in the new activity on the variable m, inside the getStringExtra("key",m);. can anyone help?
嗨，我正在传递一个带有意图的字符串，它在 getStringExtra("key",m); 内的变量 m 上的新活动中给了我一个错误。有人可以帮忙吗？
Am I doing this the right way?
我这样做是否正确？
回答by RoflcoptrException
The key of putExtra is case sensitive. One time you use
putExtra 的键区分大小写。一次使用
key
钥匙
and in the another
而在另一个
Key
钥匙
You should use key or Key in both cases.
在这两种情况下，您都应该使用 key 或 Key。
In any case use getStringExtra("key") instead of getStringExtra("key", m). As you can see in the documentationthere isn't a getStringExtra method that takes two parameters. To explain: your variable m can't be resolved because you just declared it in your first class but not in the second.
在任何情况下都使用 getStringExtra("key") 而不是 getStringExtra("key", m)。正如您在文档中看到的那样，没有采用两个参数的 getStringExtra 方法。解释一下：您的变量 m 无法解析，因为您只是在第一堂课中声明了它，而没有在第二堂课中声明它。
回答by Harinder
Yes and getStringExtra("key",m);??? is Wrong USE getStringExtra("key") ;
是和 getStringExtra("key",m);？？？使用 getStringExtra("key") 是错误的；
